<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<input type="text" placeholder="员工姓名" id="i1">
<input type="text" placeholder="员工工资" id="i2">
<input type="text" placeholder="员工工作" id="i3">
<input type="button" value="添加" onclick="f()">
<table border="1">
    <caption>员工列表</caption>
    <tr>
        <th>姓名</th><th>工资</th><th>工作</th>
    </tr>

</table>

<script>
    function f(){
        let tr = document.createElement("tr")
        let nameTd = document.createElement("td");
        let salaryTd = document.createElement("td");
        let jobTd = document.createElement("td");
        nameTd.innerText = i1.value;
        salaryTd.innerText = i2.value;
        jobTd.innerText = i3.value;
        //把td装进tr
        tr.appendChild(nameTd);
        tr.appendChild(salaryTd);
        tr.appendChild(jobTd);
        //把tr装进table
        let table = document.querySelector("table");
        table.append(tr)
    }


</script>

</body>
</html>